Question

find the circumference and area of this figure.
c = ? units
a = units²
use π = 3.14
round your answer to the nearest hundredth

Explanation:

Step1: Find the diameter

From the graph, the distance between the two black points (which is the diameter) is \(d = 2\) units.

Step2: Calculate the circumference

The formula for the circumference of a circle is \(C=\pi d\). Substituting \(d = 2\) and \(\pi=3.14\), we get \(C = 3.14\times2=6.28\) units.

Step3: Calculate the radius

The radius \(r=\frac{d}{2}\). Since \(d = 2\), then \(r = 1\) unit.

Step4: Calculate the area

The formula for the area of a circle is \(A=\pi r^{2}\). Substituting \(r = 1\) and \(\pi=3.14\), we get \(A=3.14\times1^{2}=3.14\) square units.

Answer:

\(C = 6.28\) units, \(A=3.14\) units²